Revert "Remove ray and use Camera.project_position("

This reverts commit f41676c672.

I misunderstood the way the camera projections work, and I'm better off
using the original raycasting strategy.

scenes/player.tscn

@@ -20,7 +20,7 @@ radial_segments = 64
 rings = 8
 _sections_unfolded = [ "Resource" ]
 
-[node name="RigidBody" type="RigidBody" groups=[
+[node name="RigidBody" type="RigidBody" index="0" groups=[
 "player",
 ]]
 
@@ -98,6 +98,14 @@ near = 0.05
 far = 100.0
 _sections_unfolded = [ "Transform", "Visibility" ]
 
+[node name="Ray" type="RayCast" parent="Yaw/Pitch" index="1"]
+
+enabled = true
+exclude_parent = true
+cast_to = Vector3( 0, 0, -100 )
+collision_mask = 1
+_sections_unfolded = [ "Transform" ]
+
 [node name="MeshInstance" type="MeshInstance" parent="." index="4"]
 
 transform = Transform( 1, 0, 0, 0, -1.62921e-07, -1, 0, 1, -1.62921e-07, 0, 0.95, 0 )

scripts/heroes/1.gd

@@ -23,10 +23,10 @@ func _process(delta):
 		if is_placing_wall:
 			# Find the point we're looking at, and put the wall there
 			var aim = get_node("Yaw/Pitch").get_global_transform().basis
-			var camera = get_node("Yaw/Pitch/Camera")
-			var pos = camera.project_position(Vector2())
+			var look_ray = get_node("Yaw/Pitch/Ray")
+			var pos = look_ray.get_collision_point()
 			placing_wall_node.set_translation(pos)
-			var towards = camera.project_ray_normal(Vector2()) + pos
+			var towards = look_ray.get_collision_normal() + pos
 			var up = -aim[2] # Wall should be horizontal to my view
 			placing_wall_node.look_at(towards, up)